^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) // Melfas MMS114/MMS152 touchscreen device driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) // Copyright (c) 2012 Samsung Electronics Co., Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Author: Joonyoung Shim <jy0922.shim@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/input/mt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/input/touchscreen.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /* Write only registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define MMS114_MODE_CONTROL 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define MMS114_OPERATION_MODE_MASK 0xE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define MMS114_ACTIVE BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define MMS114_XY_RESOLUTION_H 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define MMS114_X_RESOLUTION 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define MMS114_Y_RESOLUTION 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define MMS114_CONTACT_THRESHOLD 0x05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define MMS114_MOVING_THRESHOLD 0x06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* Read only registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define MMS114_PACKET_SIZE 0x0F
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define MMS114_INFORMATION 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define MMS114_TSP_REV 0xF0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define MMS152_FW_REV 0xE1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define MMS152_COMPAT_GROUP 0xF2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* Minimum delay time is 50us between stop and start signal of i2c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define MMS114_I2C_DELAY 50
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* 200ms needs after power on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define MMS114_POWERON_DELAY 200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* Touchscreen absolute values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define MMS114_MAX_AREA 0xff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define MMS114_MAX_TOUCH 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define MMS114_PACKET_NUM 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* Touch type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define MMS114_TYPE_NONE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define MMS114_TYPE_TOUCHSCREEN 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define MMS114_TYPE_TOUCHKEY 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) enum mms_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) TYPE_MMS114 = 114,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) TYPE_MMS152 = 152,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) TYPE_MMS345L = 345,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct mms114_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct regulator *core_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct regulator *io_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct touchscreen_properties props;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) enum mms_type type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) unsigned int contact_threshold;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) unsigned int moving_threshold;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* Use cache data for mode control register(write only) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u8 cache_mode_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct mms114_touch {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) u8 id:4, reserved_bit4:1, type:2, pressed:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) u8 x_hi:4, y_hi:4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) u8 x_lo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) u8 y_lo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) u8 width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) u8 strength;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) u8 reserved[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static int __mms114_read_reg(struct mms114_data *data, unsigned int reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) unsigned int len, u8 *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct i2c_msg xfer[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) u8 buf = reg & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (reg <= MMS114_MODE_CONTROL && reg + len > MMS114_MODE_CONTROL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /* Write register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) xfer[0].addr = client->addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) xfer[0].flags = client->flags & I2C_M_TEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) xfer[0].len = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) xfer[0].buf = &buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /* Read data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) xfer[1].addr = client->addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) xfer[1].flags = (client->flags & I2C_M_TEN) | I2C_M_RD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) xfer[1].len = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) xfer[1].buf = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) error = i2c_transfer(client->adapter, xfer, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (error != 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) "%s: i2c transfer failed (%d)\n", __func__, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return error < 0 ? error : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) udelay(MMS114_I2C_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static int mms114_read_reg(struct mms114_data *data, unsigned int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) u8 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (reg == MMS114_MODE_CONTROL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return data->cache_mode_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) error = __mms114_read_reg(data, reg, 1, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return error < 0 ? error : val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static int mms114_write_reg(struct mms114_data *data, unsigned int reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) unsigned int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) u8 buf[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) buf[0] = reg & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) buf[1] = val & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) error = i2c_master_send(client, buf, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (error != 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) "%s: i2c send failed (%d)\n", __func__, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return error < 0 ? error : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) udelay(MMS114_I2C_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (reg == MMS114_MODE_CONTROL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) data->cache_mode_control = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static void mms114_process_mt(struct mms114_data *data, struct mms114_touch *touch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct input_dev *input_dev = data->input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) unsigned int x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) unsigned int y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (touch->id > MMS114_MAX_TOUCH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) dev_err(&client->dev, "Wrong touch id (%d)\n", touch->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (touch->type != MMS114_TYPE_TOUCHSCREEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) dev_err(&client->dev, "Wrong touch type (%d)\n", touch->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) id = touch->id - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) x = touch->x_lo | touch->x_hi << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) y = touch->y_lo | touch->y_hi << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) dev_dbg(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) "id: %d, type: %d, pressed: %d, x: %d, y: %d, width: %d, strength: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) id, touch->type, touch->pressed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) x, y, touch->width, touch->strength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) input_mt_slot(input_dev, id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, touch->pressed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (touch->pressed) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) touchscreen_report_pos(input_dev, &data->props, x, y, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, touch->width);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) input_report_abs(input_dev, ABS_MT_PRESSURE, touch->strength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) static irqreturn_t mms114_interrupt(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct mms114_data *data = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct input_dev *input_dev = data->input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct mms114_touch touch[MMS114_MAX_TOUCH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) int packet_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) int touch_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) mutex_lock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (!input_dev->users) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) mutex_unlock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) mutex_unlock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) packet_size = mms114_read_reg(data, MMS114_PACKET_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (packet_size <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) touch_size = packet_size / MMS114_PACKET_NUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) error = __mms114_read_reg(data, MMS114_INFORMATION, packet_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) (u8 *)touch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) for (index = 0; index < touch_size; index++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) mms114_process_mt(data, touch + index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) input_mt_report_pointer_emulation(data->input_dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) input_sync(data->input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) static int mms114_set_active(struct mms114_data *data, bool active)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) val = mms114_read_reg(data, MMS114_MODE_CONTROL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (val < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) val &= ~MMS114_OPERATION_MODE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) /* If active is false, sleep mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (active)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) val |= MMS114_ACTIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return mms114_write_reg(data, MMS114_MODE_CONTROL, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static int mms114_get_version(struct mms114_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) struct device *dev = &data->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) u8 buf[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) int group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) switch (data->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) case TYPE_MMS345L:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) error = __mms114_read_reg(data, MMS152_FW_REV, 3, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) dev_info(dev, "TSP FW Rev: bootloader 0x%x / core 0x%x / config 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) buf[0], buf[1], buf[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) case TYPE_MMS152:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) error = __mms114_read_reg(data, MMS152_FW_REV, 3, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) group = i2c_smbus_read_byte_data(data->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) MMS152_COMPAT_GROUP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (group < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) dev_info(dev, "TSP FW Rev: bootloader 0x%x / core 0x%x / config 0x%x, Compat group: %c\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) buf[0], buf[1], buf[2], group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) case TYPE_MMS114:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) error = __mms114_read_reg(data, MMS114_TSP_REV, 6, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) dev_info(dev, "TSP Rev: 0x%x, HW Rev: 0x%x, Firmware Ver: 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) buf[0], buf[1], buf[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) static int mms114_setup_regs(struct mms114_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) const struct touchscreen_properties *props = &data->props;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) error = mms114_get_version(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) /* Only MMS114 has configuration and power on registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (data->type != TYPE_MMS114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) error = mms114_set_active(data, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) val = (props->max_x >> 8) & 0xf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) val |= ((props->max_y >> 8) & 0xf) << 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) error = mms114_write_reg(data, MMS114_XY_RESOLUTION_H, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) val = props->max_x & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) error = mms114_write_reg(data, MMS114_X_RESOLUTION, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) val = props->max_x & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) error = mms114_write_reg(data, MMS114_Y_RESOLUTION, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (data->contact_threshold) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) error = mms114_write_reg(data, MMS114_CONTACT_THRESHOLD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) data->contact_threshold);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (data->moving_threshold) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) error = mms114_write_reg(data, MMS114_MOVING_THRESHOLD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) data->moving_threshold);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static int mms114_start(struct mms114_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) error = regulator_enable(data->core_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) dev_err(&client->dev, "Failed to enable avdd: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) error = regulator_enable(data->io_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) dev_err(&client->dev, "Failed to enable vdd: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) regulator_disable(data->core_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) msleep(MMS114_POWERON_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) error = mms114_setup_regs(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (error < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) regulator_disable(data->io_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) regulator_disable(data->core_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) enable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) static void mms114_stop(struct mms114_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) disable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) error = regulator_disable(data->io_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) dev_warn(&client->dev, "Failed to disable vdd: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) error = regulator_disable(data->core_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) dev_warn(&client->dev, "Failed to disable avdd: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) static int mms114_input_open(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) struct mms114_data *data = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return mms114_start(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) static void mms114_input_close(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) struct mms114_data *data = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) mms114_stop(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) static int mms114_parse_legacy_bindings(struct mms114_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) struct device *dev = &data->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) struct touchscreen_properties *props = &data->props;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) if (device_property_read_u32(dev, "x-size", &props->max_x)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) dev_dbg(dev, "failed to get legacy x-size property\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (device_property_read_u32(dev, "y-size", &props->max_y)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) dev_dbg(dev, "failed to get legacy y-size property\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) device_property_read_u32(dev, "contact-threshold",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) &data->contact_threshold);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) device_property_read_u32(dev, "moving-threshold",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) &data->moving_threshold);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if (device_property_read_bool(dev, "x-invert"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) props->invert_x = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) if (device_property_read_bool(dev, "y-invert"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) props->invert_y = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) props->swap_x_y = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) static int mms114_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) struct mms114_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) const void *match_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) dev_err(&client->dev, "Not supported I2C adapter\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) data = devm_kzalloc(&client->dev, sizeof(struct mms114_data),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) input_dev = devm_input_allocate_device(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) if (!data || !input_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) dev_err(&client->dev, "Failed to allocate memory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) data->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) data->input_dev = input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) match_data = device_get_match_data(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if (!match_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) data->type = (enum mms_type)match_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 0, MMS114_MAX_AREA, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) touchscreen_parse_properties(input_dev, true, &data->props);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) if (!data->props.max_x || !data->props.max_y) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) dev_dbg(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) "missing X/Y size properties, trying legacy bindings\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) error = mms114_parse_legacy_bindings(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) input_set_abs_params(input_dev, ABS_MT_POSITION_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 0, data->props.max_x, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) 0, data->props.max_y, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (data->type == TYPE_MMS114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * The firmware handles movement and pressure fuzz, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) * don't duplicate that in software.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) data->moving_threshold = input_abs_get_fuzz(input_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) ABS_MT_POSITION_X);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) data->contact_threshold = input_abs_get_fuzz(input_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) ABS_MT_PRESSURE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) input_abs_set_fuzz(input_dev, ABS_MT_POSITION_X, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) input_abs_set_fuzz(input_dev, ABS_MT_POSITION_Y, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) input_abs_set_fuzz(input_dev, ABS_MT_PRESSURE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) input_dev->name = devm_kasprintf(&client->dev, GFP_KERNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) "MELFAS MMS%d Touchscreen",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) data->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (!input_dev->name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) input_dev->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) input_dev->dev.parent = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) input_dev->open = mms114_input_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) input_dev->close = mms114_input_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) error = input_mt_init_slots(input_dev, MMS114_MAX_TOUCH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) INPUT_MT_DIRECT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) input_set_drvdata(input_dev, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) i2c_set_clientdata(client, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) data->core_reg = devm_regulator_get(&client->dev, "avdd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (IS_ERR(data->core_reg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) error = PTR_ERR(data->core_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) "Unable to get the Core regulator (%d)\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) data->io_reg = devm_regulator_get(&client->dev, "vdd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (IS_ERR(data->io_reg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) error = PTR_ERR(data->io_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) "Unable to get the IO regulator (%d)\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) error = devm_request_threaded_irq(&client->dev, client->irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) NULL, mms114_interrupt, IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) dev_name(&client->dev), data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) dev_err(&client->dev, "Failed to register interrupt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) disable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) error = input_register_device(data->input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) dev_err(&client->dev, "Failed to register input device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) static int __maybe_unused mms114_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) struct mms114_data *data = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) struct input_dev *input_dev = data->input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) /* Release all touch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) for (id = 0; id < MMS114_MAX_TOUCH; id++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) input_mt_slot(input_dev, id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) input_mt_report_slot_inactive(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) input_mt_report_pointer_emulation(input_dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) input_sync(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) mutex_lock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) if (input_dev->users)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) mms114_stop(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) mutex_unlock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) static int __maybe_unused mms114_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) struct mms114_data *data = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) struct input_dev *input_dev = data->input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) mutex_lock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) if (input_dev->users) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) error = mms114_start(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (error < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) mutex_unlock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) mutex_unlock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) static SIMPLE_DEV_PM_OPS(mms114_pm_ops, mms114_suspend, mms114_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) static const struct i2c_device_id mms114_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) { "mms114", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) MODULE_DEVICE_TABLE(i2c, mms114_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) static const struct of_device_id mms114_dt_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) .compatible = "melfas,mms114",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) .data = (void *)TYPE_MMS114,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) .compatible = "melfas,mms152",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) .data = (void *)TYPE_MMS152,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) .compatible = "melfas,mms345l",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) .data = (void *)TYPE_MMS345L,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) MODULE_DEVICE_TABLE(of, mms114_dt_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) static struct i2c_driver mms114_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) .name = "mms114",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) .pm = &mms114_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) .of_match_table = of_match_ptr(mms114_dt_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) .probe = mms114_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) .id_table = mms114_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) module_i2c_driver(mms114_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) /* Module information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) MODULE_DESCRIPTION("MELFAS mms114 Touchscreen driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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